package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.vo.AttrGroupWithAttrsVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import org.springframework.util.StringUtils;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    private AttrService attrService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }


    /*
     * 选中分类id和插叙条件进行分组查询
     * */
    @Override
    public PageUtils groupQueryPage(Map<String, Object> params, Long catelogId) {
        if (catelogId == 0) { //如果传递过来的id是0测查询全部属性
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params), new QueryWrapper<AttrGroupEntity>());
            return new PageUtils(page);
        } else {
            String key = (String) params.get("key");
            //构建条件
            QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId);
            if (!StringUtils.isEmpty(key)) {
                wrapper.and((obj) -> {
                    obj.like("attr_group_name", key).or().eq("attr_group_id", key);
                });
            }
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params), wrapper);
            return new PageUtils(page);
        }

    }


    /*
    * 获取分类下所有分组以及属性
    * 根据分类id查出所有的分组以及这些文组里面的属性
    * */
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
        List<AttrGroupEntity> attrGroupEntities = this.baseMapper.selectList(
                new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<AttrGroupWithAttrsVo> collect = attrGroupEntities.stream().map(item -> {
            AttrGroupWithAttrsVo attrsVo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(item, attrsVo);
            List<AttrEntity> relationAttr = attrService.getRelationAttr(item.getAttrGroupId());
            attrsVo.setAttrs(relationAttr);
            return attrsVo;
        }).collect(Collectors.toList());

        return collect;
    }

}